Burner plate



March 9 1926. I 1,576,251

, c. W.SPONSEL.

BURNER PLATE Filed July 7 1924 gwuwntoi easw cmnns w. sronsnn, or wnzrnnasrmnn, CONNEGTICUT, nssronoii TO 'nomns'rie Patented Mar. 9,

UNITED STATES PATENT OFF 1.576.251 ICE.

STOKER COMPANY, 01' NEW YORK, N. Y., A CORPORATIONQF DEPLAWARE.

BURNER PLATE.

Application filed July 7, 1924. Serial No. 724,585.-

To all whom it may concern Be it known that I, CHARLES W. SPONSEL, a citizen of the United States, and a resident of Wethersfield, county of Ilartford, State of Connecticut, have invented certain new and useful Improvements in a Burner Plate;

' of which the following is a specification.

This invention relatesto burner plates for use inburning coal and the like.

As an instance of a use to which my improved burner plate mayv be applied, ref erence ma be had. to a furnace of that type wherein t e coal or other fuel is fed across the plate, and the air, which supports combustion, is supplied, at least in art, through the plate. It is, of course, un erstood that the present 'disclosure' is by way of illustration onl and is not to be taken as restrictive o my conception, my improved burner plate being susceptible of various modifications and embodiments and being adapted for use in furnaces other than the specific type here shown.

The aim of the present invention is to provide a burner plate of the character described having various features of novelty and advantage and ,which is particularly characterized in that lodgment of ashes and fuel in the openings through the plate is substantially entirely prevented so that these openings do not become clogged up, which means that the burnenplate will be effective and efiicient in operation.

A further aim of the invention is to provide a burner plate of simple construction and which may be economically manufactured.

' Other objectswill be in part obvious and Figure 1 is a diagrammatic view showing a portion of a furnace in which myburner plate is incorporated;

Fig. 2 is a side view of the burner plate, one-half thereof being shown in central section and the other half in elevation, witha portion of the skirt broken away;

Fig. 3 is a partial view looking directly larly to Fig. 1, a designates a portion of the wall of the fire box chamber; 6, a hopper into which coal or similar fuel is fed; and

'0, a screw for feeding the coal from the hopper up through the gooseneck d and onto the supporting surface of the burner e,

This showing is by wayof illustration only. It will be understood that the' fuel will-be forced outwardly and upwardly of the conical fuel supporting surface of the burner' plate while air is fed through suitable open ings in the plate so as to support combustion of the fuel. Heretofore, one objection to burner plates of this sort has been thatvthe slots or openings therein soon become clogged up with ashes and fuel, resulting in loss of efliciency. It has been proposed to provide burner plates of this sort with relatively small holes as distinguished from slots, but one objection to such plates has been that they are expensive to manufacture and they are not free from the disadvantage that the holes become clogged up.

In accordance with the present inventlon,

I provide the burner plate with holes so.

formed and arranged that there is little or .no likelihood of them becoming clogl'iged up and, therefore, there is no loss of e ciency in the furnace on this account, and the plate may be very economically manufactured. Tothese ends, I form, on opposite faces of the plate, grooves which intersect at their bottoms. In the illustrative showing of the drawings, the grooves on the upper or fuel supporting face of the burner are indicated by the numeral 10, and the groo wes on the under face, by the. numeral 11. It is, of course, obvlous that the grooves may be disposed at' any desired angle relative to one another and that, instead of the burner plate,

havin aconical fuel supporting surface, it may e flat, and in which instance the groovesdon the bottom surface may be at right angles to those on the upper surface, or the two sets of grooves may be inclined to one another. In the drawing, the grooves 10 extend in the direction in which the fuel is fed across the plate, that is to say, they are radially disposed, while the grooves 11, on the under face, are circumferentially disposed. It will be seen, particularly from Figs. 2 and 4, that the grooves 10 and 11 cut slightly into or intersect one another so as 'to form the openings 12. In the present instance, the depth of the grooves 10, and 11 is very slightly greater than one-half the thickness of the burner plate. The openings 12 may be of any suitable shape, as, for instance, square, round or diamond shaped.

The desired configuration of opening maybe obtained by making the grooves 10 and 11 to the proper cross sectional shape and size. It will be seen that the edge of the openings 12 are relatively sharp, this being of advantage in that the provide but little opportunity for the odgment of fuel or ashes therein and, in the event that ashes or fuel should tend to collect in any of the openings,

the same would be easily pried and cut loose.

From the foregoing description, it will be seen that my improved burner plate may be very economically manufactured; for example, the grooves 10 may be very simply and cheaply formedby a milling or planing operation, and the grooves llmay be formed by a turning operation. Since the openings 12are of relatively small depth, there islittle likelihood of the same becoming clogged up. The ribs 13 between the grooves 10 support the fuel and, to a certain extent, hold the same away from the openings 12. In the event that ashes or fuel should become stuck in any :of the openings 12, the

fuel, which is moved over the surface of the plate, will strike the stuck particles and pry or fulcrum them loose. It will 'be seen that the walls of the grooves are inclined towards eachother in the direction of the depth of the grooves so' that the grooves become of gradually less width, this arrangement beingof advantage in that it makes the tion provided on its fuel supporting face with radially extending grooves and on its other face with circumferential grooves cutting into said radial grooves.

CHARLES W. SPONSEL. 

